72 Camaro: Wheels, Tires, and Brakes

[72RS/SS396]

Hi all,
Somewhat new to these forums, despite stalking for too many years. Sorry for the novel, first thread kinda needs it.

I've had a 72 RS/SS for ~12 years. Finally in a position to give the beast all it deserves. Sorry to say, I've stolen one of your gems... we're in Australia, proud to show American Muscle proud. Only ever seen a couple of 2nd gens in the last decade, such a shame!

I'm not loaded, but the car's "for life", and the US$ drop means us foreigners can finally afford to have these monsters shining properly. Life's too short, and my dream's to have this as a daily-driver. So that said, my budget is flexible. I won't pinch pennies for my dream, but no blank-cheques either. It seems I'll get Wheels, Tires, Brakes for ~$5000 (+shipping)?

I've owned/driven custom classics before, so I've got an idea about how hard/stiff the ride can vary & effect. That said, I'm really stabbing in the dark with a 2nd Gen Camaro. Last time I was in the U.S. was '00, and didn't have a chance to trial any.

WHEELS
Thinking Front: 18x8 Back: 18x10
TorqThrustII Polished or TorqThrustM Chrome. TTM seem to be disliked due to mustang link (?), but I think they're a bigger, cleaner & less-aged look. Can't get them in the sizing I'm looking at though (with Camaro bolt-pattern). Backspacing & offset is messing me up too. I don't know how to be SURE. I'm in serious **** if I order wrong.

SUSPENSION
Still stock. It flops around like an old boat. I'd like to sort this out, and be sure tires aren't going to get chewed with 2 people in the back, or when I step on the gas.

TIRES
4 seasons in one day here. Seems 18x10 limits options though. Buy fitted, or fit locally?

BRAKES
Seems the Kore3 big brake kits tick all the boxes & are somewhat straight-forward... But offset & backspacing of the wheels worries me with scrubbing.

Overall, I'm after quality, value, and nothing too exotic. I'm 8000miles away from US soil, so everything needs to work. I'm qualified on tools, but that doesn't help if I'm missing 1 piece of the puzzle. If anyone has advice on how I can streamline these purchases, it'd be deeply appreciated. Again, sorry for the novel.